Stop-motion for twister-frames



E. E. HEAfNEn. STOP MOTION FOR TWISTER FRAMES. APPLICATION FILED JULY 24, l920| Patenbd Apr, 19, 1921.

' j Evnnn'r'r n. nnArNE-n, or LrNoo'mrroN, NORTH cAnoLINA.

STOP-MOTION FOR kTW'ISTEIL-FRAMES.

- y i Specification of Letters Patent. Patented Api. 19,1921;

Application sied Juiyza, 192e.Y serial N6. 398,608.

nl llwhmitjit mag/icoimcmi'i. i i Be it known that. I, Evnnnr'r E. IrInAr- NER, acitzen of the United States, residing atLincolnton, the county of Lincoln and State of North Carolina, have invented a certain new `and useful Improvement in y Stop-Motions forTwistenFrames, of whichl Y the liollowing is a full, clear, and exact description. i

This vinvention lrelates to an Vimprovement 1n attachments :for spinning machinery,` esi pecially. twisting frames, by which the rotation of the top roll is arrested by'means of j an arresting device rendered operative upon theA breaking of the yarnor thread. l

The invention consists of a stop motion for twister frames and thelike,comprising,r preferablyy a substantially U- shaped wire frame adapted to be supported at an upward and forward incline on the twister frame, or some stationary part ol the mechanism,

. and between the upper and lower rolls, and

having` a ,Swinging or pendent drop wire0 pivotally supported on'the frame' and interposed in the path. of travel ot' thevthread or yarn and adapted to be so engaged by the thread or yarn-as to render the U-frarne in# elfectiveto stop the .upper'roll aslong'as the thread lor yarn isrunning, and adapted to-'rendersaid frame effective to stop the upper roll whenever the `thread or yarn breaks;

.ja preferred feature-of the inventionfbeing theprovision of adrop wire which will engage the broken end or break a slack thread and prevent it from interferingl with the other threads or yarn, as I will proceednow to explain and linally claim. Y Y

In the Yaccompanying vdrawings illustrating-theinvention, in thefseveral figures of i which-like' parts are similarlyl designated,

Figure 1 is an end-elevation showing the stop motion'mechanismin position whenthe thread or yarn is running. F'ig 2 is a similar view with the (parts in-positlon when the stop motion has become operative to stop the upper roll. Fig. 3 is a top planview of the parts vshown in the position illustrated 1n Fig. 1. Fig. 4 is aperspectiveview of the stopI motion detached; j`,. For illustrative purposes, I have shown portion 1v of a twister frame,y having arms or brackets 2 in which isY supported a lower roll 3, and arms or brackets4 in which is supported the upper or feed roll 5, all substantially as usual.

The stop motion comprises a frame 6,sub-

ends 10 extending above the frame 6, and the connectingcrossbar 11k at its bottom, and opposite said crossfbar are the lateral extensions 12 formed with notches which serve to catch the end of a broken thread or yarn or a slack thread or yarn'fand hold it from flying out and becoming entangled with vother threads or other parts of the machin-V ery.. As shown, this drop wire is made in one piece, and the notched portions may be formed .by looping the lower ends ofthe parallel members in line with the cross-bar Fien.

l1, as shown in Fig.l 4. However, thel` ,notched extensions may be omitted if desired.

`The iframeA 1 is'provided with holes l131 l' arranged at anincline and slightly below the upper surface of the lower roll 3, to receive the ends'lll of. theframe 6 and there#- by hold said frame-'between the upper and lower-rolls, at a forward and upward tilt" or incline, asclearly showninFigs. 1 and.2,r t

The .operation would seem to be obvious,-V

but' 15 may4 represent a thread or yarn;l

wrapped once or more around the upper-rollv and passing thence` over the lower roll 3 and to the rea-r of said roll andengaging said thread orwire passes to therecciving member, whatever it maybe, below the lower roll. So long as the thread or yarn-passing over the cross-bar 11 is intact, the stop mo-y or yarnjon the cross-bar 11 tends to draw the -cross-bar 11 toward the lower roll-and` to cause the ends 10 of theirame 6to `push against the frame 1 and. thereby force and hold the frame out of operative contact with the roll. v As soon, however, `as the thread or yarnl breaks, lthen the draft on the stop motion ceases; the drop wire drops-from the forwardly` inclinedposition shown. in Fig.V

1 tos the-vertical position shown in Fig. 2 and the stop'm'otionV frame is then subject to gravity and the rotation or' the rolls, and isdrawn y tion tongues 7 are engaged by the rolls, in which event, the upper roll is lifted out of rolling Contact with the lower and its motion arrested and the further feed of the in between said rolls until the fric#l ythe cross bar l1 of the drop wire, as the,

' tion frame 6 stands out of stopping contact withthe roll, because the pull of the thread 2' f l Y 1,375,290

thread or yarn stopped. Meanwhile, ther broken end has been caught i-n vone or the other of the notched extensions 12 of the drop wire, as indicated in '.Fig. 2, and held from becoming entangled with other threads orparts of the machine and in easy position and reach to be tied by the operative. As soon as the thread or yarn is tied and re= leased, it presses against the cross-bar of the drop wire and acts to restore the stop motion to the position shown in Fig. l, that Vis to say,with the friction tongues withdrawn from between the rolls, and the twisting operation thereupon is renewed. Thus the action of the stop motion'is automatic,- t bothl for stopping the machine and for 'start v ingy 1t again, after the accident has been `revpaired.

1 only a very slight projection, if any, beyond 'vice is at the rear of the rolls.

the front of the rolls, and vconsequentl'yl is `out of ,the way of the operative attending the machine.A Practically the-whole ofthev de is to be noted that the operationv of the stop motion is practically instantaneous, thereby stopping the thread or yarn from making L lap-ups and avoiding waste. The end of a 30 broken thread `or yarn will not vcatch or' become entangled with the running end, since the drop wire snatches the thread backward.

ThereV is no occasion for the operative'to l raise the top roll from the bottom roll.A The device will not cut theyarn or Ascratch the rolls and'does not need 'any adjustment after it has been put on the frame. Moreover, the device will stop the top roll when the band or tape that runs 'the jbobbin becomes broken or slack; By the use of myfdevi'ce, an operative may ytend Vseveral machines.

Thereare no eyes tobe Ythreaded-'and the only attention required by the operative is` to s ee that a broken thread or yarn is tied behind the l'cross-bar of the drop wire. There is very little if any lwear on the rolls,'si'nce the tongues only engage the 'corners of the i rolls, while vthe constant pull of the vyarn or thread on the cross-bar lifts the device Vfrom v the bottom roll suiii'ciently to aflord'onl'y verylittle friction between ythe two.

Vari'atiQIS in detailsY of construction "and arrangement of parts are permissible within the` principle of the inventionl as herein explained and` hereinafter claimed. f Whatlclaimie:- Y, 'M

l. A stop vmotion for spinning machinery, comprising a rframe closed at one end and Vhaving friction'tongiies at its 'closed end and' Among the advantages incident to this in#A vention, it is noted that the stop motion hasy Further, it

2. A stop motion for spinningmachinery, y

comprising a frame adapted to be vplaced be-V tween upperfand lower rolls about Vwhich the threadxor yarn is passed, and a drop wire in contact with the thread or yarn to render the framel ineffectiveto stopthe upper rollV while the thread or yarn is runningand` having notches Vat lits lower end to engagef the broken end of a thread oryarn and thereupon to release the frame toV permit theroll's 5 tov draw `the frame Vin betweenA them and thereby raise and stop the Upper-roll.:

3. A :stop motion for spinning machinery,

comprising a frame adapted to be placed between 'upper and loiverrollsjabout which'the I thread or'yarn is passed,` and a drop'wire r in contact'withthe thread or'ya'rn to render the frame ineffective to 'stop 'the upperroll while `the thread orV yarn is running vand having' a cross-bar at its lower Vend and eX- f tended laterally jthereabou't land l provided Y with notches to 'engage the broken `endgof the thread 'or' yyarn or. va slack 'thread *orf yarn and thereupon to release the'fra'me to permit'the rolls to drawthe'frrarne in beiV tween Vthem and thereby raiser and stop'the upperroll.A

y 4. A stop motion fortwister frames and the like, comprising a substantially Ushaped' -wire frame, provided with nieans'to'engage a stationary part of vthe machine to support said fra-meat anupwardv and forward in'- clination and between vthe upper and' lowerrolls, and having a pendent drop Vwire pivotally supported onthe `frafr'ne and intereposed inthe path of travel of the "thread or yarn and adapted -to be v`'engz'tgedv by the .Y c

thread or yarn to render the U-frameinef fective .to `stop the upper roll whileflthe thread or yarn is-`1jnnning,-and when jre# l leased by. the breakingorv Vslacking ofv the' thread or 'yarn to permit v"said U-frameto be drawnin between the yollsto raise and' stop the upper roll., f i

` ln testimony whereof l have'hereunto setv vmy hand this 20th day of July Af. D1. 1920.

. EVERETTYELHEAFNER. t

Witnesses'ri .Y f

PAUL J. MHLEN, J. 'MULLI-QN: 

